单项选择题

If one had to save products instead of money, ______.

A．this would need years of practice
B．coal, for example, would lose its value
C．they could not be stored for years on end
D．many products would lose their value

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单项选择题

A．A film.B．The art festival.C．A play.D．The music Festival.

A．A film.
B．The art festival.
C．A play.
D．The music Festival.

单项选择题

Which of the following would be the best title for the passage

A．Computers and the Knowledge Society.
B．Service Industries in Modern Society.
C．Features and Implications of the New Era.
D．Rapid Advancement of Information Technology.